CalvinConfluent commented on code in PR #14312:
URL: https://github.com/apache/kafka/pull/14312#discussion_r1357255199
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metadata/src/main/java/org/apache/kafka/controller/PartitionChangeBuilder.java:
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@@ -328,13 +353,37 @@ public Optional<ApiMessageAndVersion> build() {
completeReassignmentIfNeeded();
+ if (PartitionChangeBuilder.this.eligibleLeaderReplicasEnabled) {
+ populateTargetElr();
+ }
+
tryElection(record);
triggerLeaderEpochBumpIfNeeded(record);
- if (record.isr() == null && !targetIsr.isEmpty() &&
!targetIsr.equals(Replicas.toList(partition.isr))) {
- // Set the new ISR if it is different from the current ISR and
unclean leader election didn't already set it.
- record.setIsr(targetIsr);
+ // During the leader election, it can set the record isr if an unclean
leader election happens.
Review Comment:
This PR mostly just manages the ELR fields, no election behavior changes. I
will try to make the leader election in separate paths with/without ELR in the
following leader election PR.
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